Category Archives: Star Clusters

Omega Centauri – The Biggest Globular in the Sky!

Omega Centaurus - 42x180 sec @ ISO 400, Televue TV-85 at F/5.6, IDAS-LPS, Modified Canon T3.
Omega Centauri – 42×180 sec @ ISO 400, Televue TV-85 at F/5.6, IDAS-LPS, Modified Canon T3.

I camped out on Friday night, April 19, 2013  at the old family farm property.   I brought everything I needed to image with my Televue TV-85 APO refractor, including my Atlas EQ-G mount.  What a load!  lol   I had fun even with a bright moon out.   As soon as Omega Centauri was visible, I started imaging it.  Three minutes at ISO 400 was as much as I could go with the moonlight and LP, so I tried to get as many sub-images as possible.  I ended up with 42×3 min for a total of 2 hours and 6 minutes worth of integration.

The Pleiades and Comet C/2012 L2 (LINEAR)

The Pleiades and C/2012 L2 (Linear)
The Pleiades and C/2012 L2 (Linear).  40×15 sec @ ISO 800, Canon 200mm, F/2.8.

I struck out trying to image Comet Panstarrs on Sunday evening, March 24, 2013.  It was just too short of a time to find it in bright twilight, bright moonlight and with its low altitude.  However, I tried something to redeem myself while I still had the equipment setup.  I shot the Pleiades with a bunch of 15 second unguided exposures.   I managed to catch them and Comet C/2012 L2 (Linear) in the shot.    This is cropped down quite a bit to just the cluster and comet.

By the way, the comet is in the lower right.  Its that small greenish smudge.   🙂

M28 Globular Cluster in Sagittarius

M28 Globular Cluster
M28 Globular Cluster

M28 Globular Cluster in Sagittarius. 2x Drizzle processing in IRIS.

Imaging telescopes or lenses: Meade SN8
Imaging cameras: Canon EOS 350D / Digital Rebel XT
Mounts: Orion Atlas EQ-G
Guiding telescopes or lenses: Celestron 102mm F/5 Achromat
Guiding cameras: Meade DSI I Pro
Software: IrisPatrick Chevalley’s Cartes du Ciel PHD guidingNoel Carboni’s Astro Tools for PhotoShop GradientXterminator
Filters: Hutech IDAS-LPS-FF
Resolution: 1600×1200
Dates: Aug. 11, 2007
Locations: Maurice Louisiana
Frames: 22×120″ ISO1600
Integration: 0.7 hours
Darks: ~15
Flats: ~10
Bias: ~40
Avg. Moon age: 27.55 days
Avg. Moon phase: 4.37%
Bortle Dark-Sky Scale: 4.00